Repository navigation
iOS: simulator builds run on the interpreter, no AOT - #299
Merged
Merged
Conversation
The CI compile check (Debug, iossimulator-arm64) spent 350 of its 420 s in the unlogged stretch after "Optimizing assemblies for size": a local per-target timing shows it is _AOTCompile (23 s AOT + 40 s compiling the native output locally; six minutes on a 3-core runner), which the SDK runs for simulator builds by default. With MtouchInterpreter=all for simulator RIDs the target drops to 0.2 s and the build is otherwise the same. Device builds (ios-arm64) are untouched and keep AOT. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
The iOS CI job has been taking 7 to 9 minutes, almost all of it in one unlogged stretch after "Optimizing assemblies for size". A local build with a per-target timing summary shows what that stretch is:
_AOTCompile_RunILLink_LinkNativeExecutableThe SDK AOT-compiles simulator builds by default; on a 3-core runner those 63 s become the 350 s. The CI check is a Debug simulator compile, where AOT buys nothing, and LLVM (the knob that speeds up device Release builds) is never involved there.
MtouchInterpreter=allis set in the csproj for simulator runtime identifiers only. Device builds (ios-arm64, Debug and Release) are untouched and keep AOT, which Apple requires. This PR's own iOS job is the measurement.🤖 Generated with Claude Code